See Tech requests (neglecting instructions might result in indefinite++ processing time).
Orders can be placed via shopping cart ONLY (not with contact message or email. Special requests can be specified in the order comment ).
Any request might be silently neglected if:

referring to something without exact reference (eg order without orderid, product without exact URL ... Please do NOT send query without product URL(s), exact or closest product, and without reading that page (including references).

or if answer is in the product description or already answered, read My account => Previous Orders => view => Order history (guaranteed delivery, unlike SMTP email which is uncontrollable)

or if answer is in the VT Help (except if clear indication is given on what was checked and where it was expected => we try to give directions or update the page to be more intuitive)

or if Tech request without the requirements (see above).

The same applies for any request sent from mobile phone (!), which is not recommended